MX29F022/022NT/B
AUTOMATIC SECTOR ERASE TIMING WAVEFORM
Sector data indicated by A13 to A17 are erased. Exter-
nal erase verification is not required because data are
erased automatically by internal control circuit. Erasure
completion can be verified by DATA polling and toggle bit
checking after automatic erase starts. Device outputs 0
during erasure and 1 after erasure on Q7.(Q6 is for toggle
bit; see toggle bit, DATA polling, timing waveform)
AUTOMATIC SECTOR ERASE TIMING WAVEFORM
Vcc 5V
A13~A17
Sector
Address0
Sector
Address1
Sector
Addressn
A0~A10
WE
CE
OE
Q0,Q1,
Q4(Note 1)
Q7
555H
2AAH
555H
tAS
tAH
555H
2AAH
tCWC
tCEPH1
tCEP
tBAL
tAETB
tDS tDH
Command
In
Command
In
Command
In
Command
In
Command
In
Command
In
Command
In
Command
In
DATA polling
Command
In
Command
In
Command
In
Command
In
Command
In
Command
In
Command
In
Command #AAH Command #55H Command #80H Command #AAH Command #55H Command #30H Command #30H
(Q0~Q7)
Command
In
Command #30H
Notes:
(1). Q6:Toggle bit, Q5:Timing-limit bit, Q3: Time-out bit, Q2: Toggle bit
P/N:PM0556
REV. 1.3, NOV. 11, 2002
29